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Knights Surf Forecast
/ SA – East Coast (28 surf breaks) /
Surf Forecasts:
Knights surfForecast / SA – East Coast / Australia
48hr Weather and Surf, issued 8 pm Tuesday 16 Sep 2025 ACST
How big are the waves at Knights today?
The current surf forecast for Knights at 11PM is: 3.5m 16s primary swell from a Southwest direction and 1.5m 16s secondary swell from a South-southwest direction (forecast issued at 08:30pm September 16). The wind direction is predicted to be cross-onshore.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | - | - |
| Afternoon (16 Sep) | - | - |
| Evening (16 Sep) | 8ft (2.5m) | 13s |
Table - waves today at Knights. (Swell directed towards the surf break)
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2561 | 2362 | 5189 | 5262 | 4021 | 3632 | 3257 | 2907 | 2474 | 2029 | 1726 | 1333 | 1062 | 748 | 613 | 536 | 594 | 573 | 573 | 636 | 658 | 597 | 582 | 585 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross |
High Tide / height (m) | 11:32AM 1.12 | 11:51AM 1.13 | 12:44AM 0.62 | 12:10PM 1.11 | ||||||||||||||||||||
Low Tide / height (m) | 8:20PM 0.31 | 8:26PM 0.36 | 8:20PM 0.41 | 4:07AM 0.56 | ||||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - |
| Sunset | 6:06 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - |
 |  | |  |  |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 12 | 11 | 12 | 12 | 13 | 14 | 15 | 12 | 11 | 12 | 11 | 11 | 17 | 20 | 21 | 21 | 17 | 15 | 14 | 13 | 15 | 17 | 17 |
| Feels °C (?) | 7 | 6 | 5 | 5 | 7 | 8 | 10 | 11 | 9 | 8 | 9 | 8 | 7 | 11 | 14 | 16 | 16 | 14 | 12 | 9 | 8 | 8 | 10 | 9 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for SA - East Coast
Still cross-shore at Knights (light winds from the W at Mount Terrible Radar 28 km from Knights). 3.3m 13s groundswell from the SW with a 1.1m 17s long period groundswell from the SSW. 2 swells combining so expect closeout sets.
28 km away, 1 h 7 min ago
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